Luke_Duckwalker

I had a similar problem and I solved it lubricating the turntable with some silicone lubricant.

Update: Everything is working fine and good now, but the tubes housing was not the cause of the problem. Of course now that I've followed the guide instructions they're nicely packed in their right spot, but when I've put all together once again the problem was still there and the crane was not rotating properly. So I tried in another way: I lubricated the turntable with some silicone lubricant. At this point I could feel, even rotating the crane by hand, that it made a massive difference. I put the crane in its place for the last time and tried to operate it by the engine. All perfect. Thanks for the help!

Thanks to both of you, it might be the tubes that are creating this malfunctioning. I tried to visually check if they rub with the gears, but with everything mounted it's really difficult to see through. I will try to follow the guide in the post you linked and update with the result.

Hi everyone! Yesterday I finished building the crane of the Arocs set. I placed it on the truck and connected the battery pack to try it. The pneumatic part works like it should, but I have a slight problem with the rotation. When the crane rotation is engaged, the clutch gear in the transmission starts slipping, approximately at 45 degrees of rotation in both directions, and this results in a jerky movement of the crane, which completes the 90 degrees rotation in that way. I've checked that the gears could turn freely. I think that this problem comes from the elastic tension of the hoses, which increases with the rotation of the crane and so it requires more torque from the engine. The amount of torque to transmit is too much for the clutch gear, which starts slipping. I would like to know if any of you have encountered this problem and if you solved it in some way. Have you got any tips for me? Thanks in advance I also thought of a reduction of the size of the gear on the clutch axle, which should reduce the torque needed to operate the function, but i couldn't come to a working solution because the transmission is too packed to move something without blocking some of its mechanisms. The easiest way would have been to switch positions between the 20T gear on the cluctch axle and the 12T gear which is driven by it. The problem with this solution is that the 20T gear collides with the dark gray selector on the next axle.